CN105044242A - Method for determining styrene content of indoor air after decoration - Google Patents
Method for determining styrene content of indoor air after decoration Download PDFInfo
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- CN105044242A CN105044242A CN201510537486.7A CN201510537486A CN105044242A CN 105044242 A CN105044242 A CN 105044242A CN 201510537486 A CN201510537486 A CN 201510537486A CN 105044242 A CN105044242 A CN 105044242A
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- indoor air
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Abstract
The invention relates to the field of detection of pollutants in indoor air and in particular relates to a method for determining the styrene content of indoor air after decoration. The method is characterized by collecting the indoor air with a sampling pipe, desorbing the gas with a thermal desorption instrument and determining the gas desorbed from the thermal desorption instrument with a hydrogen flame detector after the gas enters an on-line coupled gas chromatograph to be separated, wherein the desorption temperature of the thermal desorption instrument is 250 DEG C and the desorption time is 5 minutes; the gas chromatograph column flow is 1mL/min; the initial temperature of a column box is 35 DEG C; the temperature is raised to 250 DEG C according to the program after the initial temperature is maintained for 10 minutes; the temperature raising rate is 5 DEG C/min and is maintained for one minute; the temperature of a base of the hydrogen flame detector is 250 DEG C; the flows of air, hydrogen and make-up gas are respectively 350mL/min, 35mL/min and 30mL/min. The method has strong universality, so that the method has extensive applicability and practical significance.
Description
Technical field
The present invention relates to indoor air pollutants detection field, be specially a kind of assay method fitting up room air styrene-content.
Background technology
In recent years, along with the raising of people's living standard, indoor decorating and refurnishing materials consumption significantly increases, Determination of TVOC in Indoor Air concentration also increases, the incidence of disease such as " harmful building syndrome " and " sick Building related allergies asthma " is increased year by year, the harm caused is on the rise, and in pulpit, TVOC level also seems more urgent.The relevant criterion of current country to indoor coating has GB18582-2008 " in indoor decorating and refurnishing materials interior wall coating limits of harmful substances ", HJ2537-2014 " environmental labelling product technical requirement water paint " and GB24410-2009 " indoor decorating use woodwork coating " etc., it is more than limits of harmful substances standard, the harmful substance contents of main test material self, is different from building material and discharges aerial amount of pollutant (being mainly TVOC).TVOC is the major pollutants of room air, owing to being soluble in grease, is easy to be detrimental to health by pulmonary absorption.When its mass concentration is lower than 0.2mg/m
3time, human body has no adverse reaction, and exceedes this value, may cause discomfort, even occurs headache or the injury of other nerves.
Styrene, as one of pollutant TVOC principal ingredient, in interior decoration process at home, is usually main pollution products, therefore carries out indoor assay effectively accurately to it, will be of value to and eliminating accurately, and safeguard the health of people.
Summary of the invention
The object of the invention is to now provide a kind of assay method fitting up room air styrene-content, adopt the equipment such as thermal desorptioner and gas chromatograph to measure, step of the present invention is comparatively simple, measurement result accurate and effective, is suitable for promoting.
For realizing the object of the invention, the technical scheme of employing is:
A kind of assay method fitting up room air styrene-content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 5min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 35 DEG C, and after keeping 10min, temperature programme is to 250 DEG C, and heating rate is 5 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The present invention adopts pyrolysis analyzer, gas chromatograph, hydrogen flame determination method, measures fitment process and Indoor Air after Decoration styrene-content, effectively can be separated identification with other components, thus the styrene-content in Accurate Measurement air.Highly versatile of the present invention, therefore has applicability and realistic meaning widely.
Embodiment
Be described in further detail below by specific embodiment.
A kind of assay method fitting up room air styrene-content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 5min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 35 DEG C, and after keeping 10min, temperature programme is to 250 DEG C, and heating rate is 5 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. fit up the assay method of room air styrene-content for one kind, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 5min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 35 DEG C, and after keeping 10min, temperature programme is to 250 DEG C, and heating rate is 5 DEG C/min, keeps 1min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537486.7A CN105044242A (en) | 2015-08-28 | 2015-08-28 | Method for determining styrene content of indoor air after decoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537486.7A CN105044242A (en) | 2015-08-28 | 2015-08-28 | Method for determining styrene content of indoor air after decoration |
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| Publication Number | Publication Date |
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| CN105044242A true CN105044242A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510537486.7A Pending CN105044242A (en) | 2015-08-28 | 2015-08-28 | Method for determining styrene content of indoor air after decoration |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010090049A1 (en) * | 2009-02-05 | 2010-08-12 | 日本碍子株式会社 | Ddr-type zeolite powder, and process for the production of ddr-type zeolite powder |
| CN101923076A (en) * | 2009-06-17 | 2010-12-22 | 天津滨海质量监督检测中心有限公司 | Detection and analysis method of benzene series contained in air |
| CN103675134A (en) * | 2013-12-05 | 2014-03-26 | 上海金玺实验室有限公司 | Method for detecting benzene series pollutants in gas by using internal standard method |
| CN104597182A (en) * | 2013-10-31 | 2015-05-06 | 大连大公环境检测有限公司 | Method for detecting benzene series in air |
-
2015
- 2015-08-28 CN CN201510537486.7A patent/CN105044242A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010090049A1 (en) * | 2009-02-05 | 2010-08-12 | 日本碍子株式会社 | Ddr-type zeolite powder, and process for the production of ddr-type zeolite powder |
| CN101923076A (en) * | 2009-06-17 | 2010-12-22 | 天津滨海质量监督检测中心有限公司 | Detection and analysis method of benzene series contained in air |
| CN104597182A (en) * | 2013-10-31 | 2015-05-06 | 大连大公环境检测有限公司 | Method for detecting benzene series in air |
| CN103675134A (en) * | 2013-12-05 | 2014-03-26 | 上海金玺实验室有限公司 | Method for detecting benzene series pollutants in gas by using internal standard method |
Non-Patent Citations (4)
| Title |
|---|
| ALFRED T. HODGSON: "A Review and a Limited Comparison of Methods for Measuring Total Volatile Organic Compounds in Indoor Air", 《INDOOR AIR》 * |
| E. MASSOLD 等: "Determination of VOC and TVOC in Air Using Thermal Desorption GC-MS–Practical Implications for Test Chamber Experiments", 《CHROMATOGRAPHIA》 * |
| 彭清涛 等: "热解吸直接进样气相色谱法分析室内空气中的总挥发性有机化合物", 《化学分析计量》 * |
| 李辰 等: "吸附／一级热解吸／气相色谱联用测定室内空气中的挥发性有机物", 《分析科学学报》 * |
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Application publication date: 20151111 |